Pittsburg State University has completed a 15-year, $30 million effort to remodel all residential housing on its campus.

On Wednesday, the university rededicated the final project – a $3.1 million renovation of Nation Hall East.

The Joplin Globe reports most of the residence halls on campus are more than 50 years old.

The renovations included enlarged bathrooms, new windows, renovated laundry rooms and improved mechanical systems.

Steve Erwin, vice president of student life, said the university decided in the mid- to late 1990s that the school either had to upgrade the residential halls or stop offering on-campus housing.

The school’s on-campus residential census has increased from almost 800 in 1998 to about 1,300 in 2014.